189488149 has 2 divisors, whose sum is σ = 189488150. Its totient is φ = 189488148.

The previous prime is 189488129. The next prime is 189488177. The reversal of 189488149 is 941884981.

189488149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184280625 + 5207524 = 13575^2 + 2282^2 .

It is a cyclic number.

It is not a de Polignac number, because 189488149 - 2⁹ = 189487637 is a prime.

It is a super-2 number, since 2×189488149² = 71811517222892402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189488096 and 189488105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189488129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94744074 + 94744075.

It is an arithmetic number, because the mean of its divisors is an integer number (94744075).

Almost surely, 2^189488149 is an apocalyptic number.

It is an amenable number.

189488149 is a deficient number, since it is larger than the sum of its proper divisors (1).

189488149 is an equidigital number, since it uses as much as digits as its factorization.

189488149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 52.

The square root of 189488149 is about 13765.4694435025. The cubic root of 189488149 is about 574.3730017419.

The spelling of 189488149 in words is "one hundred eighty-nine million, four hundred eighty-eight thousand, one hundred forty-nine".